Caster



FIG. 1 is a left front perspective view of a first embodiment of a caster embodying our new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a right side elevational view thereof;

FIG. 8 is a partial sectional view taken along line 8--8 of FIG. 5;

FIG. 9 is a left side elevational view of a second embodiment of the design shown in FIG. 1 with the right side elevational view being a mirror image thereof;

FIG. 10 is a front elevational view thereof; and,

FIG. 11 is a rear elevational view thereof.

The broken line showing of a partial caster wheel is for illustrative purposes only and forms no part of the claimed design.

The undisclosed top and bottom plan views of the second embodiment are identical to the top and bottom plan views shown in FIG. 5 and 6 of the first embodiment except for appearance of the wheel trim. 

The ornamental design for a caster, as shown and described. 